273.D-5043(A)

PI:Asplund/ Nissen/ Primas

Rank Class: A


Last update of this page: Tue Aug 31 17:45:39 2004
Last update of the USG file: Aug 24 14:40:55 2004
Major Instrument Modes: RED600 + IS#3

RA Range: 15.7 - 20.6h

Constraint set (Typical seeing, Transparency,Airmass, FLI, Moon distance):
1.4, THN, 1.2-1.5, 1.0, 30

Pre-imaging run? No! Chilean run? No! Special calibrations? No!
Time critical? No! ToO? No! Carry-over run? No!

Special Remarks:
one target is setting (observable only at the beginning of the night - 20min exposure) - please check calibration needs! 

 
 
 These are follow-up observations in order to detect the very weak signature
of the lithium isotope #6 in the very metal-poor star LP815-43, for which
only an upper limit has been determined from previous observations. A
successful detection strongly depends on getting very high quality observed
spectra. 5 OBs (each with 50min integration time) have been submitted for
this star, plus one OB for a template/comparison star (HD140283, 20min). 

Requirements: 1. the template/comparison star is setting fast - observable
only at the beginning of the night;  2. based on previous experience with
Li6/Li7 abundance ratios, extra calibrations are needed: 8 FF and 3 ThAr
exposures should be taken in the morning for each of the night(s) with
science observations (this is important in order to realise the highest
possible quality in the reduced spectra).
The FF should be taken without IS, but with the same slit length as the
output from the slicer.

Information about the progress of this run:

Run status page 273.D-5043A

README of this run:

273.D-5043A.README

Check which ftp directories exist for this run:
P73 Directory exists for 273.D-5043A

Finding charts are attached to the following OBs of this run:
OB_IDOB_name Finding chart
OB:170835 HD140283_Red600_Im3_1 273.D-5043A.HD140283.jpg
OB:170840 LP815_Red_600nm_im3_1 273.D-5043A.LP815.jpg
OB:170840 LP815_Red_600nm_im3_1 273.D-5043A.002.jpg
OB:170843 LP815_Red_600nm_im3_2 273.D-5043A.LP815.jpg
OB:170843 LP815_Red_600nm_im3_2 273.D-5043A.002.jpg
OB:170847 LP815_Red_600nm_im3_3 273.D-5043A.LP815.jpg
OB:170847 LP815_Red_600nm_im3_3 273.D-5043A.002.jpg
OB:170848 LP815_Red_600nm_im3_4 273.D-5043A.LP815.jpg
OB:170848 LP815_Red_600nm_im3_4 273.D-5043A.002.jpg
OB:170850 LP815_Red_600nm_im3_5 273.D-5043A.LP815.jpg
OB:170850 LP815_Red_600nm_im3_5 273.D-5043A.002.jpg